Thank you for providing specific information (including that link)! It makes diagnosis easier (albeit not foolproof, at least when performed by a nontechie like me).
Since your atty (and cart) work fine on your regular batt, it obviously isn't an atty or cart problem per se (and there have been a lot of complaints lately about 510 attys with a burnt taste). So it's something to do with the PT and/or how it is interacting with the atty.
That PT is billed as "high-powered" and does not have an inline battery as most 510 PTs do. And in fact it is
not a 510 PT, but a 901 PT (with an adapter added by the supplier). It may be delivering up to 5V to your atty (which was designed for a battery delivering
less than 3.7V. [Yeah, it's called "3.7" but it's not.]
Your problem may be allieviated by frequent
dripping directly on the atty coil, rather than using carts (with whatever filler). At higher volts, an atty
must constantly be kept moist. Carts don't do that very effectively. In my opinion, the only really effective cartridge is the cartomizer (especially the newer, more advanced ones, Kr8 or 510).
Also, some
e-liquids handle higher voltage better than others. The only ones that are labeled as such (to my knowledge*) are the High Voltage line from NHaler, but posting in the
e-liquid Discussion forum could yield other suggestions based on the experience of other vapers.
* not omnicient the last time I checked
There
may be something wrong with the PT. If you have a 901 atty, you could see how it behaves on the PT (without the adapter). Otherwise, contact the supplier and see if they can advise or provide a refund or replacement.
Another option: You may want to try one of the HV ("high voltage") atomizers, which really are higher
resistance (ohms) to balance the higher voltage delivered by the PT. Officially, those HV attys are for 6V+, but it might work.
Hope this helps!
